- All sections
- D - Textilespaper
- D21H - Pulp compositionspreparation thereof not covered by subclasses , impregnating or coating of papertreatment of finished paper not covered by class or subclass paper not otherwise provided for
- D21H 13/18 - Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylonitriles
Patent holdings for IPC class D21H 13/18
Total number of patents in this class: 13
10-year publication summary
|
1
|
2
|
1
|
1
|
0
|
2
|
0
|
0
|
1
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Chemical Corporation | 4682 |
2 |
| Dow Global Technologies LLC | 10720 |
1 |
| Mitsubishi Rayon Co., Ltd. | 880 |
1 |
| Arjowiggins Security | 120 |
1 |
| Japan Exlan Company Limited | 56 |
1 |
| NSK-Warner K.K. | 60 |
1 |
| Schweitzer-Mauduit International, Inc. | 45 |
1 |
| SWM Luxembourg s.a.r.l. | 49 |
1 |
| SWM Luxembourg | 84 |
1 |
| DuPont Safety & Construction, Inc. | 662 |
1 |
| ABB Technology Ltd | 452 |
1 |
| Mativ Holdings, Inc. | 85 |
1 |
| Other owners | 0 |